Jannik Sinner faces the penultimate test in his defense of his U.S. Open title tonight under the lights at Arthur Ashe, taking on No. 25 seed Felix Auger-Aliassime in the men’s semifinal.
Sinner has been nearly flawless on his way to the final four, dropping just one set across five matches.
In the quarterfinals, the reigning champion cruised past Lorenzo Musetti in straight sets, improving his 2025 hard-court record to 17–1. His trademark combination of clean ball-striking and relentless consistency has left opponents with little room to breathe.
Auger-Aliassime, meanwhile, is enjoying one of the best Slam runs of his career, returning to an elite form he displayed some years ago.
He passed mighty tests along the way, outlasting Alex de Minaur in four sets in the quarterfinals, building on earlier upsets of Alexander Zverev and Andrey Rublev.
The Canadian’s serve has been his biggest weapon — he fired 22 aces against de Minaur alone — and he’s playing with renewed confidence after a difficult 2024 season.
Sinner–Auger-Aliassime Head-to-Head
Auger-Aliassime leads their head-to-head 2–1, but Sinner won their most recent meeting in Cincinnati earlier this summer in emphatic fashion, 6-0, 6-2. Auger-Aliassime’s two wins were in 2022.
Prediction
Sinner in four sets. Auger-Aliassime’s serve should keep the match competitive, but Sinner’s return game and baseline dominance are likely to blunt those strengths. The Canadian has the firepower to take a set, yet Sinner’s form points toward a commanding four-set win — and possibly even a straight-sets finish.
How to Watch Jannik Sinner vs. Felix Auger-Aliassime
Tonight’s semifinal between Jannik Sinner and Félix Auger-Aliassime is scheduled to start at 7:00 PM at Arthur Ashe Stadium.
Coverage will air live on ESPN. ESPN’s television broadcast also streams live on the ESPN app and website.
Sinner vs. Auger-Aliassime
Date: Friday, September 5, 2025
Expected Start Time: 7:00 PM Eastern
Venue: USTA Billie Jean King National Tennis Center, Flushing Meadows, NY
Court: Arthur Ashe Stadium
TV: ESPN
Streaming: ESPN app and website
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